<template>
  <div class="main">
    <a-form
      class="user-layout-login"
      ref="formLogin"
      :autoFormCreate="(form)=>{this.form = form}"
      id="formLogin">

      <a-tabs
        :activeKey="loginMode"
        :tabBarStyle="{ textAlign: 'center', borderBottom: 'unset' }"
        @change="handleTabClick">

        <a-tab-pane key="usernameMode" tab="账号密码登陆">
          <a-form-item
            fieldDecoratorId="username"
            :fieldDecoratorOptions="{rules: [{ required: true, message: '请输入帐户名或邮箱地址' }, { validator: this.handleUsernameOrEmail }], validateTrigger: 'change'}">
            <a-input size="large" type="text" placeholder="帐户名或邮箱地址 / admin">
              <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }"/>
            </a-input>
          </a-form-item>

          <a-form-item
            fieldDecoratorId="password"
            :fieldDecoratorOptions="{rules: [{ required: true, message: '请输入密码' }], validateTrigger: 'blur'}">
            <a-input size="large" type="password" autocomplete="false" placeholder="密码 / admin">
              <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }"/>
            </a-input>
          </a-form-item>
        </a-tab-pane>

        <a-tab-pane key="mobileMode" tab="手机号登陆">
          <a-form-item
            fieldDecoratorId="mobile"
            :fieldDecoratorOptions="{rules: [{ required: true, pattern: /^1[34578]\d{9}$/, message: '请输入正确的手机号' }], validateTrigger: 'change'}">
            <a-input size="large" type="text" placeholder="手机号">
              <a-icon slot="prefix" type="mobile" :style="{ color: 'rgba(0,0,0,.25)' }"/>
            </a-input>
          </a-form-item>

          <a-row :gutter="16">
            <a-col class="gutter-row" :span="16">
              <a-form-item
                fieldDecoratorId="captcha"
                :fieldDecoratorOptions="{rules: [{ required: true, message: '请输入验证码' }], validateTrigger: 'blur'}">
                <a-input size="large" type="text" placeholder="验证码">
                  <a-icon slot="prefix" type="mail" :style="{ color: 'rgba(0,0,0,.25)' }"/>
                </a-input>
              </a-form-item>
            </a-col>

            <a-col class="gutter-row" :span="8">
              <a-button
                class="getCaptcha"
                tabindex="-1"
                :disabled="state.smsSendBtn"
                @click.stop.prevent="getCaptcha"
                v-text="!state.smsSendBtn && '获取验证码' || (state.time+' s')">
              </a-button>
            </a-col>
          </a-row>
        </a-tab-pane>
      </a-tabs>

      <a-form-item>
        <a-checkbox v-model="formLogin.rememberMe">自动登陆</a-checkbox>
        <router-link
          :to="{ name: 'recover', params: { user: 'aaa'} }"
          class="forge-password"
          style="float: right;">忘记密码
        </router-link>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          htmlType="submit"
          class="login-button"
          :loading="loginBtn"
          @click.stop.prevent="handleSubmit"
          :disabled="loginBtn">确定
        </a-button>
      </a-form-item>

      <div class="user-login-other">
        <span>其他登陆方式</span>
        <a>
          <a-icon class="item-icon" type="alipay-circle"/>
        </a>
        <a>
          <a-icon class="item-icon" type="taobao-circle"/>
        </a>
        <a>
          <a-icon class="item-icon" type="weibo-circle"/>
        </a>
        <router-link class="register" :to="{ name: 'register' }">注册账户</router-link>
      </div>
    </a-form>
  </div>
</template>

<script>
  import { mapActions } from 'vuex'
  import { timeFix } from '@/utils/util'

  import apiDefine from '@/api/api-define'

  export default {
    name: 'user-login',

    data () {
      return {
        loginMode: 'usernameMode',
        loginType: 0, // login type: 0 email, 1 username, 2 telephone
        loginBtn: false,
        form: null,

        state: {
          time: 60,
          smsSendBtn: false
        },

        formLogin: {
          username: '',
          password: '',
          captcha: '',
          mobile: '',
          rememberMe: true
        }
      }
    },

    methods: {
      ...mapActions([
        'login',
        'logout'
      ]),

      handleUsernameOrEmail (rule, value, callback) {
        const regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
        if (regex.test(value)) {
          this.loginType = 0
        } else {
          this.loginType = 1
        }
        callback()
      },

      handleTabClick (key) {
        this.loginMode = key
        // this.form.resetFields()
      },

      handleSubmit () {
        let flag = false

        let loginParams = {
          remember_me: this.formLogin.rememberMe
        }

        // 使用账户密码登陆
        if (this.loginMode === 'usernameMode') {
          this.form.validateFields(['username', 'password'], { force: true }, (err, values) => {
            if (!err) {
              flag = true
              loginParams[!this.loginType ? 'email' : 'username'] = values.username
              loginParams.password = values.password
            }
          })
          // 使用手机号登陆
        } else {
          this.form.validateFields(['mobile', 'captcha'], { force: true }, (err, values) => {
            if (!err) {
              flag = true
              loginParams = Object.assign(loginParams, values)
            }
          })
        }

        if (!flag) return

        this.loginBtn = true

        this.login(loginParams)
          .then(() => {
            this.loginSuccess()
          })
          .catch(err => {
            this.requestFailed(err)
          })
      },

      getCaptcha (e) {
        e.preventDefault()

        this.form.validateFields(['mobile'], { force: true }, err => {
          if (!err) {
            this.state.smsSendBtn = true

            const interval = window.setInterval(() => {
              if (this.state.time-- <= 0) {
                this.state.time = 60
                this.state.smsSendBtn = false
                window.clearInterval(interval)
              }
            }, 1000)

            const hide = this.$message.loading('验证码发送中..', 0)
            this.$http.post(apiDefine.sms.get_captcha, { mobile: this.formLogin.mobile })
              .then(res => {
                setTimeout(hide, 2500)
                this.$notification['success']({
                  message: '提示',
                  description: '验证码获取成功，您的验证码为：' + res.result.captcha,
                  duration: 8
                })
              })
              .catch(err => {
                setTimeout(hide, 1)
                clearInterval(interval)
                this.state.time = 60
                this.state.smsSendBtn = false
                this.requestFailed(err)
              })
          }
        })
      },

      loginSuccess () {
        this.loginBtn = false
        this.$router.push({ name: 'board' })
        this.$notification.success({
          message: '欢迎',
          description: `${timeFix()}，欢迎回来`
        })
      },

      requestFailed (err) {
        this.$notification['error']({
          message: '错误',
          description: ((err.response || {}).data || {}).message || '请求出现错误，请稍后再试',
          duration: 4
        })
        this.loginBtn = false
      }

    }
  }
</script>

<style lang="less" scoped>
  .user-layout-login {
    label {
      font-size: 14px;
    }

    .getCaptcha {
      display: block;
      width: 100%;
      height: 40px;
    }

    .forge-password {
      font-size: 14px;
    }

    button.login-button {
      padding: 0 15px;
      font-size: 16px;
      height: 40px;
      width: 100%;
    }

    .user-login-other {
      text-align: left;
      margin-top: 24px;
      line-height: 22px;

      .item-icon {
        font-size: 24px;
        color: rgba(0, 0, 0, 0.2);
        margin-left: 16px;
        vertical-align: middle;
        cursor: pointer;
        transition: color 0.3s;

        &:hover {
          color: #1890ff;
        }
      }

      .register {
        float: right;
      }
    }
  }
</style>
